Are there any Advanced Classes in the game?

Question

In regular Fire Emblem games, there are Advanced Classes which are more powerful versions of a previous class. For example a Mercenary who uses swords can become a Hero which uses swords and axes. These advanced classes are only obtainable by powering up your character once they have reached level 10+.

Are there any advanced classes in Fire Emblem Heroes?
Or any characters/classes that can use two colours of weapons?

Answer 1

Currently, there is no advanced classes in the game. Seeing as the game just came out, though, this answer could get outdated soon.